CENTRIFUGAL SEPARATOR

PCT No. PCT/SE85/00249 Sec. 371 Date Jan. 15, 1986 Sec. 102(e) Date Jan. 15, 1986 PCT Filed Jun. 13, 1985 PCT Pub. No. WO86/00029 PCT Pub. Date Jan. 3, 1986.Centrifugal separator, the separation chamber (9) of which is surrounded by a first rotor part (1) and a second rotor part (2), an annular flange portion (3) of the first rotor part (1) being axially inserted into a sleeve formed end portion (5) of the second rotor part (2) and connected thereto by means of a locking joint. The locking joint comprises locking elements (8), which are brought radially outwards from a position radially inside said sleeve formed end portion (5) and axially outside said annular flange portion (3), such that one part of each locking element (8) is located in an internal recess (7) in the sleeve formed end portion (5), whereas the remaining part of the locking element (8) is located radially inside the periphery of said flange portion 3, whereby the locking element 8 is arranged to transmit axial forces from the first rotor part (1) to the second rotor part (2). In order to position the various parts of the locking joint relative to each other, the locking joint is provided with a pre-stressing element (10), which has a radially outer portion (11) abutting against a substantially axially directed surface of said sleeve formed end portion (5), preferably against its end surface, and which is arranged by means of a pre-stressing member (12) to be connected with said first rotor part (1) and to pre-stress it via the locking elements (8) against the second rotor part (2).